A bellows tear resistance testing apparatus

Abstract

The utility model relates to a kind of corrugated pipe tear resistance test equipment, including fixed plate and moving plate, the moving plate side is equipped with the drive structure for driving moving plate transverse movement, the upper side of fixed plate and moving plate is equipped with fixed column and moving column respectively, the fixed column and moving column are semicylindrical, the fixed column and moving column approach, fixed column and moving column form a complete cylindrical, the cylindrical diameter is less than the inner diameter of the corrugated pipe to be tested, the corrugated pipe is sleeved in the cylindrical outside formed by fixed column and moving column, then control moving column moves outward, so that the distance between fixed column and moving column gradually increases, when moving column moves to preset position, whether the corrugated pipe is broken is observed, to judge the axial tear resistance of corrugated pipe.

Description

Technical Field

[0001] This utility model relates to the field of pipe testing equipment, and in particular to a corrugated pipe tear resistance testing device. Background Technology

[0002] After the production of corrugated pipes, some parameter tests are required to ensure that they meet certain requirements during use. In the existing technology, the tear test of corrugated pipes is mainly carried out in the length direction of the pipe. That is, the corrugated pipe is clamped in the length direction and then torn outward. The relevant data is detected by the tensile force sensor. At this time, only the tear force in the radial direction of the corrugated pipe can be tested, and the tear resistance in the axial direction of the corrugated pipe is not tested. Utility Model Content

[0003] Therefore, it is necessary to provide a corrugated pipe tear resistance testing device to address the problems in the existing technology.

[0004] A corrugated pipe tear resistance testing device, characterized in that it includes a fixed plate and a movable plate, the movable plate having a driving structure on its side for driving the movable plate to move laterally, and a fixed column and a movable column respectively on the upper side of the fixed plate and the movable plate, the fixed column and the movable column being semi-cylindrical, and when the fixed column and the movable column are brought together, the fixed column and the movable column form a complete cylinder, the diameter of the cylinder being smaller than the inner diameter of the corrugated pipe to be tested.

[0005] In one embodiment, the device further includes a base plate, the fixing plate is fixed to the upper side of the base plate, the upper side of the base plate is provided with a guide strip, the lower side of the movable plate is provided with a groove or slider adapted to the guide strip, and the movable plate slides along the direction of the guide strip on the upper side of the guide strip.

[0006] In one embodiment, the drive structure is a motor fixed to the upper side of the base plate, and the motor shaft is connected to the movable plate to control the movement of the movable plate.

[0007] In one embodiment, a tension sensor is provided between the motor shaft and the moving plate.

[0008] In one embodiment, a cover plate is fixedly connected to the upper side of the base plate via a vertical connecting plate. The cover plate is spaced apart from the base plate. The cover plate has a through hole. The fixed column and the movable plate extend from the through hole to the upper side of the cover plate. A movable groove is provided on the side of the through hole. When the movable plate moves along the direction of the guide bar on the upper side of the guide bar, the movable column moves in the movable groove.

[0009] In one embodiment, the top of the cylindrical shape after the fixed column and the movable column are joined has a chamfer, and the outer side of the middle part of the cylindrical shape has an indentation.

[0010] The aforementioned corrugated pipe tear resistance testing equipment involves fitting the corrugated pipe onto the outer side of a cylinder formed by a fixed column and a movable column. The movable column is then controlled to move outward, gradually increasing the distance between the fixed and movable columns. When the movable column reaches a preset position, the corrugated pipe is observed to determine whether it breaks, thereby assessing the axial tear resistance of the corrugated pipe. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the corrugated pipe tear resistance testing equipment of this utility model; Figure 2 This is a schematic diagram of the fixed column and movable column of the corrugated pipe tear resistance testing equipment of this utility model; Among them, 1. Fixed plate; 11. Fixed column; 12. Recessed part; 2. Moving plate; 21. Moving column; 3. Drive structure; 31. Motor; 32. Tension sensor; 4. Guide bar. Detailed Implementation

[0012] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0013] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0015] like Figure 1 and Figure 2As shown, a corrugated pipe tear resistance testing device is characterized by comprising a fixed plate 1 and a movable plate 2. The movable plate 2 is provided with a driving structure 3 on its side for driving the movable plate 2 to move laterally. The fixed plate 1 and the movable plate 2 are respectively provided with a fixed column 11 and a movable column 21 on their upper sides. The fixed column 11 and the movable column 21 are both semi-cylindrical. When the fixed column 11 and the movable column 21 are brought together, the fixed column 11 and the movable column 21 form a complete cylinder. The diameter of the cylinder is smaller than the inner diameter of the corrugated pipe to be tested.

[0016] The corrugated pipe is fitted onto the outer side of the cylinder formed by the fixed column 11 and the movable column 21. Then, the movable column 21 is controlled to move outward, so that the distance between the fixed column 11 and the movable column 21 gradually increases. When the movable column 21 moves to the preset position, observe whether the corrugated pipe breaks, so as to judge the axial tear resistance of the corrugated pipe.

[0017] At this time, the movement distance of the moving plate 2 can be controlled to determine whether the corrugated pipe meets the requirements. Specifically, the corrugated pipe is fitted onto the outside of the cylindrical fixed column 11 and the moving column 21, and then the moving plate 2 is controlled to move a preset distance. The corrugated pipe is directly observed to see if it is torn. If it is not torn, it means that it meets the requirements. If it is torn, it means that it does not meet the requirements.

[0018] To ensure the moving plate 2 remains straight during movement, in this embodiment, the device further includes a base plate. The fixed plate 1 is fixed to the upper side of the base plate. A guide strip 4 is provided on the upper side of the base plate, and a groove or slider adapted to the guide strip 4 is provided on the lower side of the moving plate 2. The moving plate 2 slides along the guide strip 4 on the upper side of the guide strip 4. Two guide strips 4 are fixed to the upper side of the base plate and are arranged in parallel. A corresponding groove or slider is provided on the lower side of the moving plate 2, and the bottom of the slider has a corresponding groove. Thus, during the movement of the moving plate 2 controlled by the driving structure 3, it can be ensured that the moving plate 2 slides on the upper side of the guide strip 4 and remains straight during the sliding process. This ensures that the moving column 21 moves in a straight line during the movement, making the change in the positional relationship between the moving column 21 and the fixed column 11 more stable during the test, thereby allowing for stable testing of the tear resistance of the corrugated pipe.

[0019] The drive structure 3 is used to control the movement of the moving plate 2. In this embodiment, the drive structure 3 is a motor 31 fixed on the upper side of the base plate. The motor shaft of the motor 31 is connected to the moving plate 2 and is used to control the movement of the moving plate 2. Under the action of the motor 31, the moving plate 2 moves, thereby controlling the movement of the moving column 21. Furthermore, in order to test specific data, in this embodiment, a tension sensor 32 is provided between the motor shaft of the motor 31 and the moving plate 2. At this time, the tension sensor 32 is set at the position between the shaft and the moving plate 2. In this way, when testing the bellows, the specific tension can be tested, thereby obtaining the tear resistance data of the bellows more accurately.

[0020] To avoid interference between components during testing, in this embodiment, a cover plate is fixedly connected to the upper side of the base plate via a vertical connecting plate. The cover plate is spaced apart from the base plate and has a through hole. The fixed column 11 and the moving plate 2 extend from the through hole to the upper side of the cover plate. A moving groove is provided on the side of the through hole. When the moving plate 2 moves along the guide bar 4 on the upper side of the guide bar 4, the moving column 21 moves within the moving groove. After the cover plate is installed, the top parts of the moving column 21 and the fixed column 11 extend to the outside of the cover body. Thus, only the top parts of the moving column 21 and the fixed column 11 are outside the cover body, resulting in a simpler appearance. During testing, the corrugated pipe to be tested only needs to be fitted onto the moving column 21 and the fixed column 11 on the outside of the housing to position the corrugated pipe. This makes placing the corrugated pipe to be tested more convenient. Furthermore, with the moving groove provided, the moving column 21 moves within the moving groove, ensuring its normal movement.

[0021] Finally, for the fixed column 11 and the movable column 21, the corrugated pipe to be tested is fitted onto the outside of the cylindrical structure through the cylindrical shape. In order to reduce the testing cost, a shorter section is usually cut from the whole corrugated pipe for testing. Therefore, in this embodiment, in order to prevent the corrugated pipe from jumping out of the outside of the cylinder during the testing process, the top of the cylinder after the fixed column 11 and the movable column 21 are joined is provided with a chamfer, and the outer side of the middle part of the cylinder is provided with an inner recess 12. After setting the concave portion 12, the cylindrical shape is smaller in the middle position and larger in the top position than the outer diameter of the concave portion 12 in the middle position. In this way, during the deformation of the bellows, the deformation in the middle position is less than that in the top position, and the top position will break first. Thus, when the bellows breaks, because the deformation in the middle position is smaller, the middle position may not break, so the entire bellows will not break. Even if the middle position breaks, the different times of the rupture will cause the different parts of the bellows to break at different times, which can avoid generating a lot of noise. At the same time, the broken bellows will generally be fitted on the outer position of the cylinder and will not pop out.

[0022] Meanwhile, the top of the cylindrical shape after the fixed column 11 and the movable column 21 are joined has a chamfer, which can be easily fitted into the cylindrical position during the test.

[0023] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0024] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bellows tear resistance testing apparatus characterized by, It includes a fixed plate and a movable plate. The movable plate has a drive structure on its side for driving the movable plate to move laterally. The fixed plate and the movable plate are respectively provided with a fixed column and a movable column on their upper sides. The fixed column and the movable column are both semi-cylindrical. When the fixed column and the movable column are close together, the fixed column and the movable column form a complete cylinder. The diameter of the cylinder is smaller than the inner diameter of the corrugated pipe to be tested.

2. The bellows tear resistance test apparatus of claim 1, wherein, The device also includes a base plate, the fixed plate is fixed to the upper side of the base plate, the upper side of the base plate is provided with a guide strip, the lower side of the movable plate is provided with a groove or slider adapted to the guide strip, and the movable plate slides along the direction of the guide strip on the upper side of the guide strip.

3. The bellows tear resistance test apparatus of claim 2, wherein, The drive structure is a motor fixed to the upper side of the base plate. The motor shaft is connected to the moving plate and is used to control the movement of the moving plate.

4. The bellows tear resistance test apparatus of claim 3, wherein, A tension sensor is installed between the motor shaft and the moving plate.

5. The bellows tear resistance test apparatus of any one of claims 2 to 4, wherein, A cover plate is fixedly connected to the upper side of the base plate via a vertical connecting plate. The cover plate is spaced apart from the base plate. The cover plate has a through hole. The fixed column and the movable plate extend from the through hole to the upper side of the cover plate. A movable groove is provided on the side of the through hole. When the movable plate moves along the direction of the guide bar on the upper side of the guide bar, the movable column moves in the movable groove.

6. The bellows tear resistance test apparatus of claim 1, wherein, The top of the cylindrical shape after the fixed column and the movable column are joined has a chamfer, and the outer side of the middle part of the cylindrical shape has an indentation.

Images